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NXP Semiconductors BZX284-B22,115
- Part No.:
- BZX284-B22,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Zener Diodes
- Package:
- SOD-110
- Datasheet:
-
BZX284-B22,115.pdf
- Description:
- DIODE ZENER 22V 400MW SOD110
- Quantity:
- Payment:
- Shipping:
Inventory:8,798
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Product details
Overview
BZX284-B22,115 from NXP Semiconductors is a ±2% tolerance Zener voltage regulator diode in a SOD110 ceramic SMD package, rated for 22 V nominal working voltage at 5 mA test current, 400 mW total power dissipation, and 30 Ω typical differential resistance at 5 mA. It serves as a precision low-power voltage reference in power supply feedback paths, overvoltage protection circuits, and analog signal conditioning stages.
For engineers reviewing the BZX284-B22,115 datasheet, BZX284-B22,115 pinout, BZX284-B22,115 application, or BZX284-B22,115 equivalent, key selection criteria include its 22 V Zener voltage tolerance (±2%), low 30 Ω dynamic impedance, −18.4 mV/K temperature coefficient at 5 mA, 1.25 A non-repetitive peak reverse surge capability, and SOD110 footprint compatibility with space-constrained PCB layouts.
Technical Context
The BZX284-B22,115 operates as a two-terminal silicon Zener diode optimized for stable reverse-bias breakdown regulation. Its junction temperature range extends to 150 °C, and thermal resistance from junction to ambient is 315 K/W when mounted on a standard 11 × 25 × 1.6 mm PCB.
It exhibits a negative temperature coefficient of −18.4 mV/K at IZ = 5 mA, consistent with mid-range Zener voltages (15–24 V), and maintains ≤100 nA reverse leakage at VR = 0.7 × VZnom (15.4 V), supporting low-quiescent-current bias networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 21.6 V to 22.4 V at IZ = 5 mA - ensures tight output regulation in feedback loops requiring ±2% accuracy. |
| Differential Resistance (rdif) | 30 Ω typ., 250 Ω max. at IZ = 5 mA - minimizes output voltage variation under load current changes. |
| Temperature Coefficient (SZ) | −18.4 mV/K at IZ = 5 mA - enables predictable drift compensation in temperature-sensitive references. |
| Reverse Leakage (IR) | ≤100 nA at VR = 15.4 V (0.7 × VZnom) - preserves low standby power in battery-backed or energy-harvesting circuits. |
| Peak Reverse Surge (IZSM) | 1.25 A at tp = 100 μs - withstands transient overvoltage events without degradation. |
| Total Power Dissipation (Ptot) | 400 mW at Tamb = 25 °C - supports continuous operation in compact SMD designs with minimal heatsinking. |
| Package | SOD110 ceramic SMD - 2.1 × 1.4 × 1.6 mm footprint ideal for high-density consumer and industrial PCBs. |
Pinout & Package
SOD110 is a two-terminal surface-mount ceramic package with cathode marked by a band on one end. The device has no active pins-only anode (terminal 1) and cathode (terminal 2) leads formed into gull-wing shape for reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Terminal 1) | Forward conduction path / reference ground node | Connected to circuit ground or lower-potential rail; carries forward current up to 250 mA. |
| Cathode (Terminal 2) | Zener breakdown terminal / regulated output node | Provides stable 22 V reference when reverse-biased; must be connected to higher-potential rail via current-limiting resistor. |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables direct use in precision 22 V reference designs without post-calibration trimming. |
| Low 30 Ω dynamic impedance | Reduces output voltage shift under ±1 mA load variations-critical for ADC reference buffers. |
| Negative tempco (−18.4 mV/K) | Allows pairing with positive-tempco components (e.g., resistors) to achieve near-zero net drift. |
| 1.25 A surge rating | Eliminates need for external TVS in moderate-energy transient environments (e.g., 12 V automotive subsystems). |
| SOD110 ceramic construction | Provides superior moisture resistance and long-term stability vs. plastic-packaged Zeners in humid environments. |
Applications
| Power Supply Feedback Reference | Overvoltage Clamp Protection |
|---|---|
|
Use Scenario: Regulating output voltage in isolated DC-DC converters using optocoupler feedback. IC Role / Device Role / Timing Role: Zener reference node for TL431 or similar shunt regulator ICs in secondary-side feedback loop. Use Value: Tight ±2% VZ tolerance ensures ±1% overall output regulation without trimming resistors. |
Use Scenario: Protecting microcontroller I/O pins from accidental 24 V miswiring in industrial PLC modules. IC Role / Device Role / Timing Role: Low-leakage clamp between I/O line and ground, activated only above 22 V. Use Value: 100 nA IR at 15.4 V prevents signal distortion during normal 0–5 V operation. |
| Analog Sensor Biasing | Low-Power Voltage Reference |
|
Use Scenario: Providing stable excitation voltage to resistive temperature detectors (RTDs) in battery-powered data loggers. IC Role / Device Role / Timing Role: Precision 22 V source for constant-current generator driving RTD bridge. Use Value: −18.4 mV/K tempco allows predictable offset correction in firmware calibration routines. |
Use Scenario: Generating fixed reference for 16-bit SAR ADC in portable medical instrumentation. IC Role / Device Role / Timing Role: Primary voltage reference for internal ADC reference buffer amplifier. Use Value: 30 Ω rdif limits reference voltage droop to <150 μV under 5 μA load variation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STMicroelectronics BZT52-B22 | Same SOD123 package; ±2% tolerance; 35 Ω rdif (vs. 30 Ω); 150 °C Tj max. | Higher rdif increases output sensitivity to load shifts; identical thermal derating curve. | Acceptable where 5 Ω higher impedance is tolerable and SOD123 board footprint is already allocated. |
| Vishay PLZ22B | SOD123 package; ±2% tolerance; 25 Ω rdif; 1.5 A IZSM; 400 mW Ptot. | Lower rdif improves regulation but requires layout review for 0.3 mm larger body length. | Preferred for new designs needing marginally better regulation stability and surge robustness. |
Compared with BZX284-B22,115, BZT52-B22 offers identical tolerance but slightly higher impedance and different package outline, while PLZ22B delivers lower impedance and higher surge rating in a marginally larger SOD123 body-both require footprint verification but serve overlapping regulation roles.
Availability
BZX284-B22,115 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, and medical sensor interfaces requiring stable component supply and long-term obsolescence management.
Supply support for BZX284-B22,115 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The BZX284 series was designed for high-reliability, low-power voltage regulation in space-constrained SMD applications-emphasizing tight tolerance, low leakage, and ceramic-package stability across extended temperature ranges.
FAQ
What is the Zener voltage tolerance of the BZX284-B22,115?
The BZX284-B22,115 has a guaranteed Zener voltage tolerance of ±2% at 5 mA test current, meaning its nominal 22 V breakdown voltage falls between 21.6 V and 22.4 V under specified conditions. This tight tolerance eliminates the need for external trimming in most precision reference applications and is confirmed in Table 1 of the NXP datasheet.
What is the maximum continuous power dissipation for the BZX284-B22,115?
The BZX284-B22,115 has a maximum total power dissipation of 400 mW at an ambient temperature of 25 °C, as defined in the Limiting Values table. Derating is required above 25 °C at 1.27 mW/°C (based on Rth j-a = 315 K/W), and this rating assumes mounting on a standard 11 × 25 × 1.6 mm PCB per note 1 in the datasheet.
Does the BZX284-B22,115 have a specified reverse leakage current?
Yes-the BZX284-B22,115 has a maximum reverse leakage current of 100 nA at VR = 15.4 V (0.7 × VZnom), as listed in the Electrical Characteristics table. This low leakage supports energy-efficient operation in always-on sensor biasing and battery-powered reference circuits where quiescent current must remain below 1 µA.
What is the differential resistance of the BZX284-B22,115 and why does it matter?
The BZX284-B22,115 has a typical differential resistance of 30 Ω and a maximum of 250 Ω at IZ = 5 mA. This parameter quantifies how much the Zener voltage changes with small variations in current-lower rdif means tighter regulation under dynamic load conditions, which is critical for ADC references and feedback loops where voltage stability directly impacts measurement accuracy.
Is the BZX284-B22,115 compatible with lead-free reflow soldering processes?
Yes-the BZX284-B22,115 uses a ceramic SOD110 package qualified for standard lead-free reflow profiles, including peak temperatures up to 260 °C for 10 seconds. Its construction meets JEDEC J-STD-020 moisture sensitivity level (MSL) 1, allowing unlimited floor life at ≤30 °C/60% RH without dry packing.
BZX284-B22,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- SOD-110
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 22 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 25 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 15.4 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-110
BZX284-B22,115 FAQ
1.How can I place an order for BZX284-B22,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX284-B22,115 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for BZX284-B22,115 reliable?
The price and inventory of BZX284-B22,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX284-B22,115 is usually 5 days.
3.What payment methods are accepted for BZX284-B22,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX284-B22,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX284-B22,115?
BZX284-B22,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX284-B22,115 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for BZX284-B22,115?
For technical support, including BZX284-B22,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX284-B22,115 requirements.
6.How does Aetrix verify that BZX284-B22,115 is sourced from the original manufacturer or authorized distributors?
All BZX284-B22,115 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BZX284-B22,115 meets industry standards.
7.What is the process for return or replacement of BZX284-B22,115?
All BZX284-B22,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX284-B22,115, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The BZX284-B22,115 part is unused and in its original packaging.
Return procedure for BZX284-B22,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX284-B22,115 Tags
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